Product Name: H- Met-OH
CAS#: 63-68-3
Synonyms: L-Methionine
Molecular Formula: C5H11NO2S
Molecular Weight: 149.2
Specifications:
Item
|
Standard
|
Analysis data
|
Appearance
|
White crystals or crystalline powder
|
Conforms
|
Specific rotation[α]20/D
(C=2 in 6N HCl)
|
+23.0 to +24.0 Degree
|
+23.42°
|
State of solution
(Transmittance)
|
Clear and colorless not less than 98.0%
|
98.3%
|
Chloride (Cl)
|
Not more than 0.020%
|
<0.02%
|
Ammonium (NH4)
|
Not more than 0.02%
|
<0.02%
|
Sulfate (SO4)
|
Not more than 0.020%
|
<0.02%
|
Iron (Fe)
|
Not more than 10ppm
|
<10ppm
|
Heavy metal(Pb)
|
Not more than 10ppm
|
<10ppm
|
Arsenic(As2O3)
|
Not more than 1ppm
|
<1ppm
|
Other Amino Acids
|
Not detectable
|
Conforms
|
Loss on drying
|
Not more than 0.20%
|
0.19%
|
Residue on ignition(sulfated)
|
Not more than 0.10%
|
0.07%
|
Assay
|
99.0% to 101.0%
|
99.0%
|
pH
|
5.6 to 6.12
|
5.8
|
Inspector:
|
|
Manager:
|
|
Conclusion
|
The product is according with standard.
|
|